JavaScript Performance Hacks | From Slow to Pro: JavaScript Performance Optimization Secrets [Hindi]

Pubblicato il: 07 agosto 2024
sul canale di: NonCoderSuccess

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JavaScript Performance Hacks | From Slow to Pro: JavaScript Performance Optimization Secrets [Hindi]

🚀 Welcome to NonCoderSuccess! Let's Dive Deep into Exploring the Depths of JavaScript Performance Hacks with Real-World Examples! 🌟

📚 Materials/References:
JavaScript Best Practices Revealed Blog Article :   / javascript-performance-hacks-speed-up-your...

🔍 What You'll Learn:
🌟 Optimize Loops: Minimize operations inside loops and store array length outside the loop to reduce repeated property access
🌟 Reduce DOM Access: Access the DOM less frequently by storing elements in local variables
🌟 Minimize DOM Size: Keep the number of DOM elements low for faster loading and rendering
🌟 Avoid Unnecessary Variables: Use values directly when possible to avoid creating superfluous variables
🌟 Delay JavaScript Loading: Place scripts at the end of the body to allow the page to load first, use the defer attribute for external scripts, and dynamically load scripts after the page has fully loaded

🔽We will cover interview questions below:
1. Why is it important to minimize operations inside loops?
2. How does storing the array length outside the loop improve performance?
3. Why is frequent DOM access considered slow in JavaScript?
4. How can you minimize DOM access in your code?
5. How does the size of the DOM affect page performance?
6. What are some strategies to keep the DOM size small?
7. Why should unnecessary variables be avoided in JavaScript?
8. Can you give an example of avoiding unnecessary variables in a code snippet?
9. What is the benefit of placing scripts at the end of the body?
10. How does the defer attribute improve script loading performance?
11. What is an alternative way to load scripts after the page has fully loaded?

⏰ Timestamps:
01:12 Optimize Loops: Minimize operations inside loops and store array length outside the loop to reduce repeated property access
02:32 Reduce DOM Access: Access the DOM less frequently by storing elements in local variables
03:05 Minimize DOM Size: Keep the number of DOM elements low for faster loading and rendering
03:33 Avoid Unnecessary Variables: Use values directly when possible to avoid creating superfluous variables
04:22 Delay JavaScript Loading: Place scripts at the end of the body to allow the page to load first, use the defer attribute for external scripts, and dynamically load scripts after the page has fully loaded

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